Air and Fuel Fuel Injection Systems and Components - Electronic

Eflexfuel

eFlexPro 2 E85 Conversion Kit

$999.00

SKU: U-EF-PRO2

In Stock
In Stock
Ships by Jul 29
Free Shipping
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The eFlexFuel eFlexPro 2 is an advanced E85 conversion kit designed for the Mercedes-Benz C63 AMG with the 6.2L M156 V8 engine. It allows for maximum power gains through full custom tuning, offering precise ethanol optimization while retaining all OEM safety features. The system includes a patent-pending virtual load sensor, two analog inputs, and wideband support, all managed via the eFlexTuner software and a smartphone app.

Installation involves under-hood modifications to the fuel lines and is considered moderate to advanced difficulty, with estimated times of 2-4 hours for professionals and 4-6 hours for DIY installations. The kit is compatible with any ethanol blend from E0 to E85 and comes with an upgraded harness and control unit for high-power or modified builds. Fuel line modification is required, but detailed instructions and support are provided.

Fitment

Fitment Guaranteed

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandEflexfuel
Part NumberU-EF-PRO2
CategoryAir and Fuel

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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